论文部分内容阅读
在低炭和中炭合金结构钢的轧材及其锻坯正火后,会出现不同于一般正常的片状珠光体加等轴或网状铁素体的组织,这种组织目前暂名为“非正常”组织。存在“非正常”组织的轧材,冷下料时要发生剪刀片损坏;冲孔时冲头折断;锻件机械加工时,切削性能不好,刀具磨损较快,刀口易于烧毁,甚至断钻头、打车刀、拉刀和滚刀。这不仅严重损耗和毁坏工具,而且影响零件质量和生产效率。关于“非正常”组织的问题,虽然进行过一些鉴定、分析和研究,但对其形成和
In the low carbon and carbon alloy steel rolling and its forging normalizing, there will be different from the normal normal flake pearlite plus equiaxed or reticular ferrite organization, this organization tentatively named “Abnormal” organization. There is “abnormal” organization of rolled material, cold cutting to occur when the scissors blade damage; punching punching punch; forging machining, cutting performance is not good, tool wear faster, easy to burn knife edge, and even broken drill, Knife, broach and hob. This not only seriously damage and destroy tools, but also affect the quality of parts and production efficiency. On the “abnormal” organization issues, although some identification, analysis and research, but its formation and